Okay, flip the question to the other side: What’s the most joyous song you know? Not funny or comedic, per se, but a song that when you hear it it makes you glad to be alive and causes all the daisies to grow.
For me, currently, it’s “Birdhouse In Your Soul” by They Might Be Giants.
Regarding the song, you beat me to it. I was going to put that down as well. So…I will put my close second by them instead - Dirty Paws: http://youtu.be/YWcs-kHCveQ (It is an awesome live performance on the backstreets of Italy!)